I can't believe I can't remember the title to this story, I've read it so many times. Anyway Kikyo who is Kagome's sister is married to Inuyasha and Rin is their daughter. Inuyasha is pretty much estranged from his family. Inuyasha and Kikyo died in a car accident and Kagome ends up taking care of Rin where she lives in the Taisho's back yard in the guest house. Kagome also secretly writes for a sex column and she and Sesshomaru end up getting to really know each other and falling in love.
Any help will be greatly appreciated
Thanks!